Question

Currently I have this regular expression to validate letters, dash and spaces.

/^[a-zA-Z-\s]*$/

Now, I am quite confused how can this be rewritten to have a rule that it will accept everything except numbers?

Answer 1

To have anything except something, you need a negated character class

 [^\d]

A character class that starts with ^ is a negated class, \d is a predefined class that contains digits.

If you have really only digits you can shorten this further, there is also a predefined negation of \d that is \D

So [^\d] = \D

You may find this link to a regex reference on regular-expressions.info useful